Process for the production of phenolic-rich pyrolysis oils for use in making phenol-formaldehyde resole resins
US6143856A · kind A · utility
6Cited by
4References
26Claims
0Family size
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Key dates
| Filing date | Feb 5, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Feb 5, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A phenolic-rich pyrolysis oil is produced by pyrolysing lignocellulosic material at a temperature of no more than about 550.degree. C under an absolute pressure of no more than about 50 kPa to produce pyrolysis vapors, and condensing the pyrolysis vapors to obtain a condensate consisting of a phenolic-rich pyrolysis oil having a dew point of about 65 to about 75.degree. C. under an absolute pressure of about 15 to about 20 kPa. Such a phenolic-rich pyrolysis can be directly used in making phenol-formaldehyde resol resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.